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Purchase Orders – Definition | Type | Process | Advantages and disadvantages

Post by: SourceVietnam

Written by Ethan Minh

Reading Time: 13 minutes

February 13, 2025


Insight:

  • A purchase order is a legally binding document from a buyer to a seller detailing a transaction’s specifics.
  • It streamlines procurement, ensures accuracy, and offers legal protection for both parties.

purchase-order

A purchase order is a binding purchase agreement that provides clear elaboration on a transaction at hand, starting with the quantities and prices, right down to delivery timelines and stated payment terms. It facilitates transparency between companies involving transactions and helps form sound, efficient business relationships.

Good procurement practices are the spine that enables continued growth and seamless operation in this ever-changing business environment. Among various tools to conduct and assist these processes, one major document is the purchase order. This blog post aims to define the purchase order, its purpose, and why it’s important in today’s procurement methods.

What is a purchase order?

In the procurement world that is so complex, 2 factors, “Precision” and “Clarity,” can either break a business transaction or set its sail. Every business needs tracking tools to ensure smooth operation and maintain high efficiency. Let’s discover the purchase orders explained: A vital tool for procurement.

Purchase order (PO) is a regular type of document existing in almost all transactions

A purchase order is a legally binding document a buyer issues to a seller. People list the types of goods ordered, quantities, and agreed prices within it. Moreover, when signing on the POs, it means that we are fully aware of our rights and responsibilities.

People use purchase orders to formalize an order more easily. They support a business by recording its purchases, managing its inventory, and making the correct payments. Purchase orders initially reduce disputes through clear terms, providing a structured approach to business transactions.

A well-structured purchase order will contain the following sections: order number, date, buy and seller information, goods details, price, and terms and conditions.

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4 Types of purchase orders

Ready to step up to the next level and improve the procurement process? Go ahead with us exploring different types of purchase orders, which will help to select an appropriate approach for every kind of transaction quickly and precisely, reducing wasted time and resources as well as improving supplier relationships:

  • Standard purchase order is the most common type used for one-time purchasing. It contains all the information about ordered items, including descriptions, quantities, prices, delivery timelines, and payment terms. It’s best suited for regular transactions.
  • A planned purchase order is targeted for repeating purchases or deliveries within a calculated period. This type of order dictates the types and quantities required and when it is needed; it thus offers businesses insight into the handling of foreseeable demands with ease.
There are 4 main types of purchase orders
  • Blanket purchase order enables continuous purchasing based on a predetermined value or quantity of goods or services over a specific period. This document type is perfect for businesses that need products constantly.
  • A contract purchase order is issued with a more formal agreement between a buyer and a supplier. It does not specify items and quantities of particular goods; it establishes a framework for subsequent purchases under pre-agreed conditions. This type is extremely helpful in establishing long-term relations.

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Purpose of a purchase order

Business owners have to understand these 3 core values of any purchase order:

  • Legal protection: A PO can be compared to a contract between the buyer and seller. People list terms and conditions within this contract that decide how the business will occur. It protects both parties from unforeseen disputes.
  • Streamlining the procurement process: A purchase order simplifies the complex procurement process into one understandable document. People use it for ordering and tracking goods or services. This minimizes almost all errors and even prevents miscommunication.
  • Budgeting and financial planning: Purchase orders contain detailed records of expenses, helping businesses allocate resources and maintain financial control.
With POs, you can track the inventory status more effectively

The purchase order process

If you would like to simplify your purchasing, the following purchase order process steps explained provide a step-by-step guide that helps you get started:

  • Step 1: You need to identify the need for goods or services. People usually send inquiry emails or purchase requisitions to inform the sellers of their needs. This ensures that you carefully consider and justify the requirements before sending it to sellers.
  • Step 2: After defining what you need, choose a reliable supplier. Based on criteria such as price, quality, terms of payment, etc, you can figure out who is good for you.
  • Step 3: You can prepare a purchase order after selecting a supplier. Remember to add goods descriptions, quantities, prices, delivery time, payment terms, etc.
  • Step 4: Before sending the purchase order to sellers, you must show it to the related department for internal approval. These steps ensure your plan goes along with the overall budget and policies of companies.
  • Step 5: Then, the approved purchase order can be sent to the supplier via email or through a purchase order system, depending on the setting of your business.
  • Step 6: The seller confirms the purchase order and then processes it based on the buyer has request.
  • Step 7: The buyer uses the POs to inspect received goods so that everything meets their expectations.
  • Step 8: After ensuring that all agreed terms are met, the buyer clears the balance, completing the procurement process.
The main process in which almost all POs take place

Advantages and disadvantages of using purchase orders

Purchase orders are key elements with almost all businesses ensuring accurate and stable financial status. If you’re new to this type of document, follow us and unlock the benefits of purchase orders for your business:

Advantages
Disadvantages
Improved accuracy ensuring accurate ordering
Creating purchase orders may be a time-consuming process
Better inventory management
Potential for administrative errors
Stronger supplier management relationships
Necessity for a tracking system
Enhanced financial control
Legal protection

General comparison between pros and cons of using purchase order

Acknowledging various benefits of using purchase orders in business may enforce your confidence in them:

  • Improved accuracy: Via purchase orders, you record and write out all details related to the business transaction. You may need them to check out the quantities, prices, delivery time, etc., far after purchasing. Therefore, remember to store them carefully for future needs.
  • Better inventory management: Purchase orders effectively support businesses in the inventory control process. Via them, administrators know what they have ordered, what consignment is about to come, and what they have received. The information in POs helps you track stockings, enhancing general inventory management.
  • Stronger supplier relationships: Clear and detailed POs are efficient tools that enhance the communication between sellers and buyers. Transparent information helps both parties reduce misunderstandings and build longer relationships.
  • Enhanced financial control: Purchase orders are a strong tool that allows you to track how much you have spent. By following closely the data from these documents, you’ll always stay within the budget limitations. They also show mistakes or discrepancies in invoices, giving that your payment is accurate.
  • Legal protection: POs list out detailed terms of the purchasing process. Therefore, they protect both the buyers and sellers’ rights. If any unforeseen disputes arise, people will use POs as a reference to resolve conflicts.
Purchase orders might be used as a reference resolving disputes

Besides many superior purchase order advantages, you also have to consider its disadvantages:

  • Time-consuming creation process: If your business is always dealing with complex transactions, the creation process of purchase orders may be difficult. You’d better invest money by setting up an advanced tracking system in this situation. This system supports you a lot in filling in detailed information.
  • Potential for administrative errors: A certain PO contains lots of information, and you may make mistakes easily, resulting in incorrect quantities or pricing discrepancies. These mistakes lead to disputes, wrong deliveries, and unexpected expenses. You should carefully review the POs 2 – 3 times before sending it to your partners.
  • Necessity for a tracking system: An automatic tracking system is a must-have factor to monitor all purchase orders effectively. Without this tool, businesses inevitably struggle to keep track of long, complex orders manually. This could lead to ineffective and a higher possibility of mistakes.
Businesses may find it difficult to set up a purchase order management system

Read more >>> Order Processing – Definition, Benefits, 7 Step Order to Process

Purchase order vs invoice

In the procurement process, many people may confuse these 2 concepts: purchase order and invoice. They’re different, then follow us and investigate purchase order vs invoice: Understanding the difference between them:

The purchase order is created by the buyer formally requesting goods from a certain seller. Within POs, people detail all information related to the order consignment, such as the name of goods, quantities, prices, payment terms, etc.

In contrast, the invoice is issued by the seller to the buyer. Within the current business transaction, sellers prepare commercial invoices after preparing all ordered goods. They have to ensure they have enough goods in stock ready to deliver. From the amount of produced goods, sellers generate invoices requesting payment from buyers.

If the purchase order starts the procurement process, the invoice finalizes it. The POs send the formal request informing the buyers’ needs to the sellers’ party. Then, the invoice is issued asking for payment and providing proof of the consignments being delivered.

POs and invoices are 2 different types of documents

Purchase order vs sales order

Purchase order vs sales order might be more confused with new players jumping into the business world. They’re complementary to each other. However, they’re created in different stages by different parties:

While the buyer creates the purchase order at the beginning of the procurement process, the seller makes the sales order at the end of this transaction. At first, the buyer outlines the PO to inform the partner of their needs. Within the PO, they will state the names of goods, item descriptions, quantities, agreed price, delivery time, etc.

After receiving the buyer’s purchase order, the seller responds to the partner via the sales order. This document is a type of confirmation that the seller acknowledges the buyer’s needs and they can fulfill these needs. Moreover, some sales orders also contain additional information related to stock availability, order status, shipping dates, etc.

Purchase order and sales order are 2 complementary documents

Purchase order vs purchase requisition

Many people, when delving into various documents used for the procurement process, may have trouble distinguishing between purchase order vs purchase requisition:

A purchase requisition is the type of internal document that a certain employee or department uses to request the purchase of specific goods. The procurement process must be reviewed and decided by the relevant authority within a large company. Therefore, people use this document to inform higher-level management to request purchasing needed equipment.

While the purchase requisition is used for internal purposes, the purchase order is used for external purchasing. It is legally binding and details all information related to the purchasing needs.
The purchase requisitions can be the starting point of the procurement process. After being approved, the information contained in it can be transferred to a purchase order.

The approved purchase requisition may turn into the official purchase order

Best practices for creating and managing purchase orders

Purchase order management is a crucial thing all businesses must have to ensure smooth streamlining of procurement. To mitigate the consequences of mistakes arising from discrepancies, you can follow these useful tips:

  • Setting up purchase order software for your business, taking advantage of automatic advanced technology so that you will track the procurement process more easily.
  • Using purchase order templates to standardize the general purchasing process, ensuring consistency between different transactions.
  • Double-check and triple-check the order, reducing the number of minor errors.
  • Trying to be as detailed as possible, ensuring the procurement process won’t confront any trouble or misunderstanding.
  • Storing all purchase orders within a place serves future needs if any incidents or disputes arise.
Remember to carefully store POs for unforeseen disputes

Conclusion

The purchase order is a legally binding document requesting goods from the seller parties. Within it, people include detailed information describing the order, such as the names of goods, prices, payment methods, etc. Almost all procurement processes require the use of POs, therefore, understanding it comprehensively helps you a lot.
For a streamlined purchasing process, familiarize yourself with purchase orders and implement them as effectively as possible. You can visit the blog section on our website, SourceVietnam.com, to learn more about various business documents.

Investigating purchase orders and enhancing your business’s financial stability!

FAQs about purchase order

What is a purchase order?

The purchase order is a legally binding document. Buyers use it to inform the sellers what they need. Within this document, buyers include information on goods, quantities, prices, terms of payment, etc.

How do I create a purchase order?

If you don’t know how to create a purchase order, you can follow these basic steps to create one for your business transaction:

  • Step 1: Identifying your need for goods or services
  • Step 2: After defining what you need, then you start choosing a reliable supplier
  • Step 3: Prepare a purchase order; remember to add goods descriptions, quantities, prices, delivery time, payment terms, etc.
  • Step 4: Before sending the purchase order to sellers, you have to show it to the related department to get internal approval
  • Step 5: Then the approved purchase order can be sent to the supplier via email or through a purchase order system
  • Step 6: The seller confirms the purchase order and then processes it
  • Step 7: The buyer uses the POs to inspect received goods so that everything meets expectations
  • Step 8: After ensuring that all agreed terms are met, the buyer clears the balance, completing the procurement process.

What are the different types of purchase orders?

There are 4 main types of purchase orders: standard, planned, blanket, and contract. You can choose one of these types depending on your needs and the continuous characteristics of the procurement process.

Why are purchase orders important?

Because they help you streamline your procurement: The purchase order process explained information is essential for you. These documents bring you many outstanding benefits, including improved ordering accuracy, better inventory management, stronger supplier relationships, enhanced financial control, and legal protection.

What information should be included in a purchase order?

Almost all purchase orders contain this information, aiming to describe the purchasing requirement comprehensively:

  • Name of goods
  • Quantity
  • Agreed price
  • Terms of payment
  • Delivery Schedule
  • Shipping methods
  •  Packing instruction

How does a purchase order benefit small businesses?

Purchase order is a superior tool allowing the stability of financial status and inventory management for small businesses. It helps you record all purchasing transactions, ensuring accurate audit processes. Moreover, it also helps you a lot in managing your stock. You will know what you have ordered when they arrive and what you have received.

Can a purchase order be modified after it has been accepted?

Yes. The purchase order is modified after it has been approved for the procurement process in large companies. You need to show your upper-level manager your buying proposal. First, this document is a purchase requisition. Then, if your proposal is accepted, its information will be transferred to official purchase orders.

What are the legal implications of a purchase order?

If any disputes or misunderstandings arise during or after the procurement process implementation, both sellers and buyers can use it as a reference to resolve the problems.

4.7/5.0 (15 vote)
Ethan Minh

Content Strategist

Before taking on the position of Content Strategist at MediaStep, Ethan Minh graduated with honors from New York University and accumulated more than 8 years of experience working at multinational companies, corporations, and marketing agencies such as Omnicom Group and The Interpublic Group of Companies (IPG). He has developed content across all platforms to implement promotional strategies for businesses.

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